An Etymological Dictionary of Astronomy and Astrophysics

A large parabolic structure that collects radio waves and focuses them on a detector by means of a secondary reflector. A similar device used as antenna for radar transmitting.

Etymology (EN): O.E. disc “plate, bowl, platter,” from L. discus “dish, platter, quoit,” from Gk. diskos “disk, platter.”

Etymology (PE): Jâm “cup, chalice, goblet, bowl,” Mid.Pers. jâm “vessel, goblet; glass,” Av. yama- “glass, glass vessel,” yāmô.pacika- “baked glass;” related to Skt. camasa- “a vessel used at sacrifices for drinking Soma, kind of flat dish or cup?”